An employee was operating a press. A billet was uneven as it entered the loader; it hit the ram and then sheared off a hydraulic line, which sprayed hydraulic fluid into the employee's mouth and was ingested. The fluid was ignited, and the fireball caught the employee's hair on fire and he sustained first-degree burns to his forehead and hand. Ingestion of the fluid and inhalation of the fumes affected the employee's airway. He was hospitalized.